Genesis 38:6
And Judah took a wife for Er his firstborn, whose name was Tamar.
Cross-reference
Genesis 24:3
Contrast
In Genesis 24:3, Abraham makes his servant swear not to take a Canaanite wife for Isaac — contrasting with Judah's choice here.
Matthew 1:3
Citation
In Matthew 1:3, Tamar is listed in Jesus' genealogy, showing the significance of this marriage despite its tragic context.